CI: Change RIOT in-place to assert that its use of riot-wrappers 0.8 …

…is compatible with 0.9

.github/workflows/test.yml

@@ -38,6 +38,8 @@ jobs:
         echo '[patch.crates-io]' >> .cargo/config.toml
         echo 'riot-wrappers = { path = "../", version = "*" }' >> .cargo/config.toml
         echo 'riot-sys = { git = "https://github.com/RIOT-OS/rust-riot-sys" }' >> .cargo/config.toml
+        # The 0.8 to 0.9 upgrade is such that we don't need a flag day as long as "nobody is holding it wrong".
+        find -name Cargo.toml -exec sed -i 's/\(^riot-wrappers.*\)"\^\?0.8"\(.*\)/\1"0.9.0-alpha.1"\2/' '{}' '+'
     - name: Pull cargo updates
       # No sense in running this in parallel -- this will download the index
       # and all relevant crates once, and after that, just make some notes in Cargo.lock